Shark teeth have inbuilt toothpaste

sharktoothAn in-depth look at shark teeth, recently published in the Journal of Structural Biology, has found that they contain fluoride, the active ingredient of most toothpaste and dental care mouthwashes which helps to explain why sharks never suffering from cavities.

The teeth of humans and other mammals contain hydroxyapatite, which is an inorganic constituent also found in bone whereas the surface of shark teeth contains 100% fluoride and of course, In addition to the unique structure of their teeth, sharks also have the handy ability to replace their teeth several times during their lives.

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